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黄胸扑虱蚜小蜂是杨圆蚧的重要内寄生昆虫。在黑龙江省绥化市一年两代,以1龄幼虫在雌性2龄幼虫寄主的体腔内越冬。5月下旬越冬代蚜小蜂成虫自雌性2龄幼虫寄主体壁突破而出。6月下旬第一代蚜小蜂成虫由雌成虫寄主而出。蚜小蜂雌成虫平均产34粒卵于寄主体壁下,成虫性比1∶0.16,雌成虫占优势。经定期观察,越冬代蚜小蜂雌成虫产卵进度是紧跟杨圆蚧雌成虫羽化而发生,第一代蚜小蜂产卵进度紧跟杨圆蚧1龄固定若虫发育进度。 为了利用自然控制杨圆蚧种群,我们选择Ⅰ、Ⅱ级标准木,并建立了每两代间蚜小蜂种群增长直线回归方程。
The yellow-beetle Aphid wasps are the major endoparasitic insects of Populus deltoids. In Suihua City, Heilongjiang Province, one year and two generations of the first instar larvae in the female second instar larvae host body cavity winter. In late May the overwintering Aphid larvae broke through the host body wall of female 2nd instar larvae. In late June, the first generation of aphids wasps came from adult female insects. Female aphid wasp average 34 eggs produced in the host body wall, adult sex ratio 1: 0.16, predominant female adults. After regular observation, the fecundity progress of female adults of the overwintering aphid occurred immediately after emergence of the females. The first-generation aphids larvae laid close to the development of the first instar nymphs. In order to control the population of P. yaquechis naturally, we selected standard woods Ⅰ and Ⅱ, and established a linear regression equation for the growth of the population of Aphids.